Eddie,
Your quote is for a passanger model, ULDs are not simulated for the Captain Sim passenger models. They are how ever for the freighter models and the default weights in the ACE are a good average to use.
By the way here is the freighter model info, on the next page of the same document you linked to:
AIRCRAFT DIMENSIONS
BOEING 757-200 Freighter
The 757-200F is narrow-bodied, short to medium range aircraft
which can carry 25.8 tonnes of cargo.
Normal Palletisation Arrangement
14 ULD 125" x 88"/317cm x 223cm
+1 ULD 108" x 60.4"/273cm x 153cm
Door sizes
Main cargo door 134" x 86"/3.40m x 2.18m
Fwd belly door 55" x 42.5"/1.40m x 1.08m
Rear belly door 54" x 44"/1.40m x 1.12m
Cargo door sill 149"/3.79m
Belly door sill fwd 97"/2.46m
Belly door sill rear 93"/2.36m
Max Gross Weight: 757-200 Freighter
2 Positions 4264kg/9402lbs
2 Positions 2222kg/4899lbs
8 Positions 2268kg/5000lbs
1 Position 2132kg/4701lbs
1 Position 2040kg/4498lbs
I hope this is of some help